Applying DFMA approaches to the design of fastening components and methods for an uninterruptible power supply unit
Matlouthi, Niko (2018)
School of Energy Systems, Konetekniikka
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This research was a result of a collaboration between Eaton power quality Oy and the Lappeenranta University of Technology. The objective of this research was to analyze the joining methods from a DFMA perspective. DFMA analysis provides a systematic approach that results in a product designed with easy manufacturing and assembly stages. DFMA ultimately leads to reducing part count and overall costs. 93PS and 93E UPS models were analyzed and a DFMA analysis of the joining methods was performed and joining efficiency ratios were measured. The systematic DFMA analysis of the fastening methods resulted in recognizing areas for improvements within the mechanical and electrical requirements and limitations for the design of UPS units. The suggested improvements cover the decrease of used joining methods and joining components, the decrease of required special tools during assembly, and improvement the assemblability of a UPS unit. Moreover, a general guideline for implementing DFMA philosophy on the fastening solutions was generated to aid mechanical designers in future models.